[bggautier]

Took my Titan and horse trailer to the Nissan Dealership and the certified master technician found the problem. The wire to the trailer's breakaway switch was not connected. Someone had stolen the battery when it was parked at the horse stables several years ago, and I don't know if the wire was pulled loose at that time or when. Something else was missing with the breakaway switch, so he has bypassed it for the time being. Once he connected the wire, everything worked fine. Now I just have to buy a new battery for the breakaway switch and have him wire it back.